Join the Mr H FB Group
 
 

Mr H Bars

Mr. H Scooter Bars have been developed with Luke Painter over the last three years. His relentless ability to break and bend bars was getting expensive as his bars were lasting as little as three weeks!!

Luke and I got chatting at the skate park one day and this led to me making a set of bars for him to his design (with the long Vee gusset) with a little input from me on steer tube material.


That was the 1st set of bars from Mr. H and they didnt last long!! After few month the ERW tube chosen for the crossbar had bent, at 3mm wall thickness we couldn't try to make it stronger with thicker steel due to weight issues...

However, we learnt a lot from this and so the development continued. I started to look at using CDS mild steel tube, this was much stronger than ERW and at 2mm wall thickness far lighter. CDS proved to be strong enough that after a years dedicated punishment from Luke they were battered, scraped and looked well used but were still arrow straight.

The bars were good and now strong enough, but I wasn't happy with the weight as they were fairly heavy compared to regular bars.
It was at this time I chose to make another prototype to see if it was possible to reduce the weight further without loosing strength.

The final development came in was T45 mild steel tubing.
T45 (as you can read below) is so much stronger than CDS and the popular 4130 (Chromoly) that it meant I could have a thinner wall thickness on the steer tube and crossbar, along with a thinner Vee gusset this resulted in reducing the weight considerably. 
Made to HIC compatible spec these bars are have stood up to all the abuse and heavy landings Luke has put them through.

Mr. H Scooter bars, developed to take the punishment of today's harcore riding styles.

 

Brazing

Brazing is used in many industries, it can be seen in the highest quality mountain bike and BMX frames and is also popular in racecar chassis including the the Aerial Atom and Caterham 7.

The steel is heated using an oxygen/acetylene gas torch and a brass alloy filler rod to make the joint. The steel is heated to 800-900 degrees C allowing the brass to melt and flow into the joint, joining both pieces of steel together.

Brazing makes a very strong joint that unlike welding, never actually melts the parent material (steel) this leaves its crystalline structure unchanged and therefore stronger with greater crack resistance.
Brazing is a favourite of mine when crafting furniture and artwork due to its unusual gold coloured join.

 

T45

T45 steel is made in the UK by Corus, it is a high grade of Carbon-Manganese mild steel with a very high tensile strength and fatigue resistance. It has a minimum of 17% elongation, this means that it will (under extreme circumstances) bend not break when eventually, overloaded. These properties make T45 a particularly suitable material for scooter handlebars.

It is used throughout the aerospace and motorsport industry as chassis and and safety cell, also in roll cages and suspension components. The land speed record car Thrust II used a space-frame chassis and safety cell made from T45 steel when it took the world record at 633mph!